> I'm pretty sure you need at least SSE for MPEG.  The core function is an
> 8x8 2D FFT.  You *might* be able to do in fixed point (and thus in MMX),
> but the SSE version would be a lot easier to get right.

Well, I'd be basing my code on libmpeg2 .. which has an MMX only
optimised version.

Anyways, another question: is int64 boxed? I presume it would be, like
floats. sooo, a 8 char string would be better? And functions to
convert to ints? Since MMX is all 64bit....

Jonathan